Line cable support with suppressor bond



1957 R. T. LOWERRE LINE CABLE SUPPORT WITH SUPPRESSOR BOND Filed March 50, 1965 United States Patent 3,306,973 LINE CABLE SUPPORT WITH SUPPRESSOR BOND Ralph T. Lowerre, Ross Township, Allegheny County,

Pa., assignor to United States Steel Corporation, a corporation of Delaware Filed Mar. 30, 1965, Ser. No. 443,971 3 Claims. (Cl. 174-140) This invention relates to a line cable support and more particularly to such a support including an interference suppressor bond for'cutting down interference on high tension power lines. High tension power lines are often located in the vicinity of places where radios, TV sets, long distance communication facilities, radio telescopes and other electronic devices are used. Interference to the operation of these devices occurs due to corona and sparks as well as harmonics. The cable is normally supported by a fitting which can pivot or otherwise move with respect to the main support. This movement causes sparking and hence interference to the operation of the various electronic devices.

It is therefore an object of my invention to provide a line cable support which incorporates means for eliminating interference due to sparks.

Another object is to provide a suppressor bond for use in such a support which can be easily installed and which cannot be readily dislodged accidentally.

Still another object is to provide such a 'bond which will have long life.

These and other objects will be more apparent after referring to the following specification and attached drawings, in which:

FIGURE 1 is a view of the bond of my invention;

FIGURE 2 is an elevation, partly in section, of a line cable support with the bond incorporated therein; and

FIGURE 3 is a side view of FIGURE 2.

Referring more particularly to FIGURE 1 of the drawing, reference numeral 2 indicates the bond of my invention. This includes a stranded wire conductor 4 which is preferably made of hard drawn bronze wires with a 7 x 19 construction. U-shaped fittings 6 and 8 are attached to the ends of the conductor 4. Fitting 6 includes a sleeve 10 attached to one end of conductor 4 with a flat portion 12 extending tangentially therefrom and having its slot or opening 14 facing the fitting 8. The fitting 8 includes a sleeve 16 attached to the other end of the conductor 4 with a flat portion 18 extending tangentially therefrom but spaced around the periphery of the stranded conductor from the flat portion 12 so that the points of tangency of the portions 12 and 18 are 180 apart. Opening 20 of portion 18 faces away from the fitting 6.

The support for the line cable C includes a bracket 22 which is attached to an insulator 23. The bracket 22 includes a base 24 and spaced apart lugs 26 and 28 extend ing therefrom. Lug 26 has an integral round pin 30 at its lower end with its axis generally parallel to the base 24. Lug 28 has a threaded opening 32 therethrough having its axis aligned with the axis of pin 30. A support member 34, having a cable receiving groove 36 therein, is pivotally supported between the lugs 26 and 28. For this purpose the support member 34 is provided with axially aligned holes 38 and 40 on opposite sides of the groove 36 with their axes generally normal to the axis of groove 36. Pin 30 is received in hole 38 and a threaded member 42 having a head 44 is threaded into opening 32. Threaded member 42 has an unthreaded end 46 which 'is received in the hole 40. In order that the support member 34 may pivot readily with respect to the bracket 22 substantial clearance is provided between pin 30 and hole 38 and between end 46 and hole 40. The support member 34 has two threaded holes 48 and 50 Patented Feb. 28, 1967 therethrough, one on each side of groove 36 with the axes of the holes 48 and 50 in substantially the same plane as the axes of holes 38 and 40, but generally normal to the axes thereof. A cable clamp 52 having a cable receiving groove 54 therein is attached to the support member 34 by means of a capscrew 56 which passes through a hole 58 in clamp 52 and is threaded into hole 48 and by a capscrew 60 which passes through a hole 62 in clamp 52 and is threaded into hole 50. Lock washers 64 and 66 may be provided between the heads of capscrews 56 and 60 and clamp 52. The parts so far described, except for the bond 2, are conventional.

According to my invention I position fitting 6 around the capscrew 60 and fitting 8 around the threaded member 42. T 0 do this the capscrew 60 is loosened and the conductor 4 positioned generally parallel to the grooves 36 and 54 and the sleeve 10 away from the clamp 52. The bond 2 is then moved longitudinally so that the capscrew 60 is received in opening 14 after which it is turned through so that the opening 14 will face toward the threaded member 42. A nut 68, which is threaded on threaded member 42, is loosened a sufiicient amount to enable the fitting 8 to slide over threaded member 42. A socket wrench is then used to tighten capscrew 60 and an open end wrench used to tighten nut 68. Since sleeve 16 is on the side of fiat portion 18 toward lug 28 there is no interference with the operation of the open end wrench. Even though the capscrew 60 and/ or nut 68 should loosen a certain amount the bond 2 will remain in position because the spring action of the conductor 4 will hold the fitting 6 against clamp 52 and the fitting 8 against the nut 68. This latter force also functions to prevent turning of the nut 68. It has been found that the conductor 4 has sufficient flexibility and strength that it will not fail due to fatigue caused by movement of the member 34 with respect to bracket 22. Also, since current flows from the member 34 through bond 2 to the bracket 22 sparking between these members is eliminated. While the bracket 22 is shown with its base 24 above the cable C it may also be positioned with its base 24 below the cable C.

While one embodiment of my invention has been shown and described it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

1. A line cable support comprising a bracket, a support member having a cable receiving groove therein, means pivotally supporting said support member on said bracket, said last named means including a threaded member, a cable clamp having a cable receiving groove therein, means for fastening said clamp to said support member including a second threaded member having its axis generally normal to the axis of said first threaded member, and a suppressor bond extending between said screw members, said suppressor bond including a stranded conductor and a flat U-shaped fitting secured to each end of said stranded conductor, the first of said fittings having its opening facing toward the second of said fittings and the second fitting having its opening facing away from the first fitting, said first fitting receiving the second threaded member in its opening and being attached thereto, said second fitting receiving the first threaded member in its opening and being attached thereto.

2. A line cable support comprising a bracket having a base and spaced apart lugs extending therefrom, one of said lugs having a threaded hole therethrough, a support member having a cable receiving groove therein, means pivotally supporting said suport member between said lugs with said groove facing away from said base, said last named means including a screw member threaded into said threaded hole, said support member having a pair of threaded holes therein one on each side of its groove,

a cable clamp having a cable receiving groove therein and a lug extending outwardly therefrom on each side of its groove, each of said last named lugs having a hole therein, a bolt passing through each of said last named holes into the associated threaded hole in said support member, said bolts being tightened to clamp a line cable between said support member and clamp, a suppressor bond extending between said screw member and the bolt adjacent thereto, said suppressor bond including a stranded conductor and a flat U-shaped fitting secured to each end of said stranded conductor, the first of said fittings having its opening facing toward the second of said fittings and the second fitting having its opening facing away from the first fitting, the fittings extending generally tangential from said conductor at diametrically opposite sides thereof, said first fitting receiving the associated bolt in its opening with the conductor on that side of the fitting away from said grooves, said second fitting receiving said screw member in its opening with the conductor on that side of the fitting toward said support member, and a nut on said screw member holding said second fitting against said bracket.

3. A suppressor bond adapted to extend between and to be attached to two members arranged with their axes References Cited by the Examiner UNITED STATES PATENTS 1,971,809 8/1934 Bjorndal 339276 2,195,705 4/1940 Morgan 338214 X 2,475,230 7/1949 Frey et al 174169 X 2,802,194 8/1957 Kirk 339-276 2,868,865 1/1959 Nilsson et al 174140 FOREIGN PATENTS 226,301 8/ 1962 Austria. 585,670 2/ 1947 Great Britain.

LARAMIE E. ASKIN, Primary Examiner. 

1. A LINE CABLE SUPPORT COMPRISING A BRACKET, A SUPPORT MEMBER HAVING A CABLE RECEIVING GROOVE THEREIN, MEANS PIVOTALLY SUPPORTING SAID SUPPORT MEMBER ON SAID BRACKET, SAID LAST NAMED MEANS INCLUDING A THREADED MEMBER, A CABLE CLAMP HAVING A CABLE RECEIVING GROOVE THEREIN, MEANS FOR FASTENING SAID CLAMP TO SAID SUPPORT MEMBER INCLUDING A SECOND THREADED MEMBER HAVING ITS AXIS GENERALLY NORMAL TO THE AXIS OF SAID FIRST THREADED MEMBER, AND A SUPPRESSOR BOND EXTENDING BETWEEN SAID SCREW MEMBERS, SAID SUPPRESSOR BOND INCLUDING A STRANDED CONDUCTOR AND A FLAT U-SHAPED FITTING SECURED TO EACH END OF SAID STRANDED CONDUCTOR, THE FIRST OF SAID FITTINGS HAVING ITS OPENING FACING TOWARD THE SECOND OF SAID FITTINGS AND THE SECOND FITTING HAVING ITS OPENING FACING AWAY FROM THE FIRST FITTING, SAID FIRST FITTING RECEIVING THE SECOND THREADED MEMBER IN ITS OPENING AND BEING ATTACHED THERETO, SAID SECOND FITTING RECEIVING THE FIRST THREADED MEMBER IN ITS OPENING AND BEING ATTACHED THERETO.
 3. A SUPPRESSOR BOND ADAPTED TO EXTEND BETWEEN AND TO BE ATTACHED TO TWO MEMBERS ARRANGED WITH THEIR AXES GENERALLY NORMAL TO ONE ANOTHER COMPRISING A STRANDED WIRE CONDUCTOR, AND A FLAT U-SHAPED FITTING SECURED TO EACH END OF SAID STRANDED WIRE CONDUCTOR WITH THE FIRST OF SAID FITTINGS HAVING ITS OPENING FACING TOWARD THE SECOND OF SAID FITTINGS AND THE SECOND FITTING HAVING ITS OPENING FACING AWAY FROM THE FIRST FITTING, EACH OF SAID FITTINGS INCLUDING A SLEEVE SURROUNDING THE STRANDED WIRE CONDUCTOR, AND A PORTION EXTENDING TANGENTIALLY THEREFROM, THE LAST NAMED PORTIONS BEING SPACED AROUND THE PERIPHERY OF THE STRANDED CONDUCTOR 180* FROM ONE ANOTHER. 